Traces the building and launch of the Tank Landing Ship Coconino County (LST-603) during World War II. During WWII, LST-603 was assigned to the European Theater of Operations. She participated in Operation Dragoon, the invasion of southern France, in August and September. Also shown are LST 521 SS Cape May County, an LST-491-class tank landing ship, and LST-470. Landing Ship, Tank (LST) was the military designation for naval vessels created during World War II to support amphibious operations... Topic: U.S. Coast Guard film.